Dredger



(No Model.) I 3"'ShetS-Sheet 1.

' L. W. BATES.

DREDG'ER. No. 503,733. Patented Aug. 422, 1893.

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cNoModeLm s mm2-sheet L. W. BATES.

DREDGER. Patented Aug. 22, 1893.

3 Sheets-Sheet 8.

Patented Aug. 22, 1893-.

(No Model.)

L. W. BATES.\

` DREDGER. NOQ 503,733.

Limi/m W130i@ UNITED STATES PATENT OFFICE.

LINDON W. BATES, OF CHICAGO, ILLINOIS.

DREDG ER.

SPECIFICATION forming part Of Letters Patent N0. 503,733, dated August22, 1893. Application filed VSeptember 21, 1892. Serial No. 446,443. lNomodel.)

To all whom it may con/cern,.-

Be it known that I, LINDoN W. BATES, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Dredgers, of which thefollowing is a specification. Y

My invention relates to dredging machines, and consists of variousfeatures, details, and combinations hereinafter set forth and claimed.

In the drawings, Figure l is a side view of a dredger provided with myimprovements; Fig. 2 a top plan view of the same; Fig. 3 a side viewpartly in section of the pivoted suction-pipe, cutter, and attendantparts; Fig. 4 a vertical sectional view on the line 4 4, Fig. 3; Figs.5, 6, and 7, views illustrating the construction of the cutter, Fig. 7being a transverse sectional view on the une (-7 of Fig. 3; and Figs. 8and 9, respectively sectional and plan views of the joint or connectionbetween the boat and the pivoted suction-pipe.

A indicates the dredge boat which may be of most any desiredconstruction, and which will of course be provided with the necessaryengines and boilers and other mechanisms, as is usual. Upon the deck, atone end is a derrick B comprising the vertical post a., and thehorizontal arm b; the said derrick being suitably braced and arranged toswing or turn upon an aXis coincident with that of the upright post.Extending across the timbers forming the arm b, is a shaft c carried insuitable bearings d and provided with one or more sleeves or sockets edesigned to receive stay rods f projecting from suitable sockets gmounted upon the ladder C in the same manner essentially as the socketsc are mounted upon the arm of the derrick. The object of these rods f isto prevent the latter from swinging laterally out of line with, orindependently of, the derrick. By mounting the sockets upon shafts asshown, they are permitted to rock or tip slightly so as to allow therods to adjust themselves, as the ladder is raised and lowered. To raiseand lower the ladder, I employ a rope or cable h and an engine t', (seeFig. 1;) the cable passing from the engine, to a sheave j at the upperend of the derrick post, thence to a sheave lo at the end of arm b, andnally about a sheave or pulley Z carried by the ladder. By placingsuitable marks or graduations upon the rod or rods f, the depth to whichthe ladder is submerged may be readily and accurately determined.

The ladder may be variously constructed, but in the present instance Ihave shown it as comprising two longitudinal timbers D D arrangedsubstantially parallel to each other and carrying between them thesuction pipe E.

The suction pipe E is secured to the boat, and to the supply-pipe of thepump, by means of a compound joint or connection shown in Figs. 3, S,and 9, which allows the said suction-pipe to swing laterally and also tobe raised and lowered. Supply pipe F which conveys the material to thepump, is provided with a Vdownwardly-turned neck or outer end G, thelower end of which is provided with a lateral iiange m in the under sideof which is formed a grooveot.

H indicates a curved pipe or elbow whose upper Vend is provided with aange o and groove p, the flanges fitting squarely against each other,and the grooves coinciding or coming into line to form a larger groove,one part otwhich shall be in the pipe G while the other part is in thepipe H, as clearly shown in Fig.` 8. Suitable two part brass packingrings q seated in this large groove, form a water-tight joint betweenthe two pipe lsections G H while allowing the latter to turn relativelyto the former upon the stem or axis a" carried in the step or bearing I.Near its upper end, the pipe-section H is grooved circumferentially treceive a band or ring J, which is provided with lateral journals Kcarried in bearings or brackets L L,-which latter are bolted orotherwise rigidly secured-to the boat. The band or ring J while holdingthe pipe-section H in proper position relatively to the pipe Gr, allowsthe former to turn upon a vertical axis coincident with the step bearingI.

Brackets L and studs or journals K are designed merely to support andsteady the pipe but not to permit any oscillation of the latter uponsuch journals as this is prevented by the step-bearing I. Formed on thefront side IOO ts within the curved elbow'H,-^`both of said I:

ot the elbow'or ypipe section -His abracket N, in which is 'journaled ashaft M; saidshat being provided with radial depending arms O carryingat their lower ends a yoke, frameor band P. This yoke or frame P ispivotally mounted betweenandgtothe arms @,and i is permanentlysecured tothe suction pipe E, so that when the suction pipe is raised and loweredit will be supported at its upperfendlf by the arms which swing from theshaft Mi as a center.

Secured to the vupper .end `of thesuctioni` pipe E is a curved extensionor elbow .Q which elbows or pipe sections being curved on the arc of acircle concentric with the shaft "M, thereby `formingacurved telescopicjoin-tfbef tween thesuctionpipe-and the pipeH. ,Suitf ablejpackingringssare seated in a `grooveon the 'inside of pipe H and arranged to .bearupon the suction-pipe so 'as Ato 'make-a-watertight joint.

,Atitsopposite end, the suction pipe is. provided with a mouth piece Yorcasting FRf Whichfis formed or provided with `anfelon-ll gatedcollarorsleeve Sto receive thefcutter shaft'T. This -shaft'or axle'T fiskeyed lor" sleeve, land carries -at its forward -end theoscillatingcutterU,-the saidcutter'being tree to turn -upon the-Shaft,while'preventedfrom ymoving Vendwi'se Zby being clamped be-tweengthefhead or enlargement on one end of "the ;shaft,'and the front-end otlthe casting R as shown in Figg. yCutter Uis made u-p`=ofz1a :hub Yo rbodyfportion t -to Ii'tupon the shaft'I, a disk-or'plate u, and a seriesof Iknives 11. Half of the knives face Oneway (see Fig. IL71) Vwhilevthe'otherhalf face in the opposite fdirection. They are provided with-angleirons v w, which latter are secured, -fres'pectively, 1to1the^disk u, and the -tront endl-orange-ofthe aton'e end1\totherocker,armsandattheother end'tothe crank wheel (Voti-the engine mountedon the frame A. Of course when the rocker arms (to which the chains areconnected) are oscillated alternately, they Will,`acting 'through :thesaidzchainszor cables X, and arms y y', .oscillate or rock the cutter,thereby causin g the latter to loosen up the lnaterial as is rwell'understood.

Upon reference to Figs. l, 3, and 9 it will be noticed that the shaft oraxle M, carried in the bracketN'lof :pipesection1H,proj ects throughAVthe side walls of theframe or support A',-

thelatterbeing provided with bushings D as shown in Fig. 9 to receivethe ends of the shaft. From this construction itwillbe'seenthatatheladder and attendant mechanism-move from, or ri'seandlfallfrornftheshat't M as a center. The cutter maybe-operated lfromanengine g mountedupon fthe lboa't, but I prefer 'thereonstruction shown.

Having described =m-y`invertt`ion, wha't jI claim isl. lnpcombinationwith a boat, aiderric'k provided-with lthe oscillating socketsl cfapivoted ladder or suction pipe, provided 'with similar sockets g, yandv"the rods -orfbars f otherwise rigidly afti-Xed in position in rthisimou-ntedin the sockets. Y v y 2. V51n-conibination'withltheboathavingthedownwardly-curved elbow G Hya-pivoted'suction tubefhavingfa telescopicconnectionjwith `the 1latter. A

3. `In combination with a` boat having a downwardly-ouwed pipe G,agcurved pipe IH 4fitting againstfthe end of pipe Grandvadapted toturnabout avertical axisfand a suction tube adapted to slide Vinto and out of =.the mouth ofthepipe p 4. In combination with a boat-:having adownwardly-curved ftiXed :pipe SG, a cur-ved Pi-pGH lined :to ipipe ieand :proviaeawith a lstep `or `bearing Jr, the vbrackets-1111 L,sec.ured

nnb V,or bodyport-ion tas shown 1n `Fig. 3.` Diskorplate u is open atthe center, and is yprovided with alateral ange a: on the Areary face{Wigs-3,5 and 6) which tits the -e'survediw under face'ofthe-mouthpiece-R. The cutteriV isfurlther providedwith-'a grate'or grid which`yis iformed by aseries ofbars V bolted or ri-v f eted at one lend tothe-disk wand at 'the opposite end to the 1tiared end of the -hub or Lbody 75,-as clearlylshown in Figs. Sand =7.

V"Keyed upon the hub t is -a casting W havingtwolaterally-extending armsyy designed to areceivel suitable `cutter actuating rods, ropes, orcables, X X, which pass lfrom the ends ofsaid `ar.m's,--to which vtheyare sey sheaves Y Y-carried'in an .upward exten-sion otfthe `casting Ras shown in FigsB and These ropes, chains or cables pass from'the"shea-ves up toa `pair-of rocker-arms Z r'Z,- v `I `i gs.`1, 3 and4,-wh'ich are journaled li-n a lbracket z projecting from abedframeorsup.

port A mounted upon the iadder. -lMotion fis imparted tothe oscillatingrocker arms "Z by means of the pitmen B which are secured vvits endfitted 'to slide therein;

1 to the-boat, andcarrying aring orlband Kto 3 encircle-theupperrendofjpipe H; anda suction pi-pehaving-a sliding connection withthe pipe H. Y

y5. In combination-with aboat and thedewnz wardly-and outwardly curvedipipelsec'tion H, a suction `pipe having a-cur-ved endQ Ztos'lide withinthe pipe =H, jaffshafft M journaled in a bracket on Athe pipe "H,andarmsaQ-extending l :from saidshaft lto the suction pipe.r

6. `I-n combination with a lboa`t the double 1I cur-ved pipesectionsfGH; ailad'derprovided with asuction-pipe; and a'pivoty-conc'entric with the curvature-of the-pipe section that'receivesthe-suction pipe,-upon which the :ladder is mounted. Y

`7. iIn combination with a boat having the curved pipe section II; =asuctionpipefha-ving a :ladder upon which the suction,pipe-iscarrie'd;`and a'fpivot on -t-hepipesec'tion Hupon which the-iladder Aand suctionpi-pe'swinlg.

8. @In combination with the ladder andthe oscillating cutter, the rockerarms,- zthefcon-` necting cables, and an engine. 4

9. In combination with the suction pipe having the mouth piece orcasting R, the sleeve S in the latter, the cutter shaft T carried by thesleeve, the cutter mounted upon the shaft, and means for actuating thecutter.

10. In combination with the suction pipe, the cutter herein describedcomprising the following elements,-a shaft; a hub t, having the lateralarms y; a disk u; cutting blades

